Company lists · Data refreshed September 2026

Top 25 Fintech software development companies based in the United States

Name: Fintech software development companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 2, 2026 743 companies tracked

RevenueBase identified 743 fintech software development companies headquartered in the United States as of September 2026 and tracks 51,719 professional contacts across them, including 18,473 with verified work emails and 18,424 with mobile numbers. New York is the largest hub.

This list covers fintech software development companies headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, how directly it supports the match, and when it was last checked. Data refreshed September 2, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list Match evidence on every row Refreshed Sep 2, 2026 86% judged on-target in blind review

743Companies

51,719Contacts tracked

18,473Verified emails

18,424Mobile numbers

Unlock all 743 companies Free signup · no credit card · 500 free credits

The 25 largest fintech software development companies based in the United States

Ranked by team size

Top 25 of 743 fintech software development companies based in the United States, ranked by team size, largest first. Data refreshed Sep 2, 2026. Evidence rates how directly each company's own description names fintech software development companies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	Jack HenryIndirect evidence	Monett, MO, United States	5,001-10,000	6,765
	“Jack Henry (Nasdaq: JKHY) is a well-rounded financial technology company that strengthens the connections between people and their financial institutions through technology and…” Source: company website · checked Sep 2, 2026
2	First Data CorporationIndirect evidence	United States	10001+	6,637
	“First Data is now Fiserv (NASDAQ:FISV).” Source: company website · checked Sep 2, 2026
3	DeluxeIndirect evidence	Sandy Springs, GA, United States	5,001-10,000	3,696
	“Deluxe, a trusted payments and data company, champions business so communities thrive.” Source: company website · checked Sep 2, 2026
4	FISIndirect evidence	Jacksonville, FL, United States	10001+	3,295
	“FIS stays ahead of how the world is evolving to power businesses, across merchants, banking and capital markets, to outpace today’s fast-changing competitive landscape and help…” Source: company website · checked Sep 2, 2026
5	Incomm PaymentsIndirect evidence	Atlanta, GA, United States	1,001-5,000	2,421
	“InComm Payments is an innovative global payments technology provider.” Source: company website · checked Sep 2, 2026
6	CSIPartial evidence	Paducah, KY, United States	1,001-5,000	1,849
	“As a forward-thinking financial technology and software partner, we help community and regional banks, as well as organizations worldwide, solve their customers’ needs through…” Source: company website · checked Sep 2, 2026
7	TOPAZIndirect evidence	Great Falls, VA, United States	1,001-5,000	1,077
	“At the forefront of the financial revolution, Topaz is a technological powerhouse specializing in digital financial solutions, standing out as the undisputed leader in the…” Source: company website · checked Sep 2, 2026
8	Cross RiverIndirect evidence	Fort Lee, NJ, United States	501-1,000	935
	“Cross River Bank provides technology infrastructure powering the future of financial services.” Source: company website · checked Sep 2, 2026
9	The BancorpIndirect evidence	Wilmington, DE, United States	501-1,000	796
	“The Bancorp, Inc, headquartered in Wilmington, DE, through its subsidiary, The Bancorp Bank, N.A, headquartered in Sioux Falls, SD, is defining the future of banking.” Source: company website · checked Sep 2, 2026
10	BLENDIndirect evidence	San Francisco, CA, United States	1,001-5,000	706
	“Blend Labs Inc,(NYSE: BLND) is the leading origination platform for digital banking solutions.” Source: company website · checked Sep 2, 2026
11	FullsteamPartial evidence	Atlanta, GA, United States	1,001-5,000	624
	“Backed by Aquiline Capital Partners and ADIA, Fullsteam is a dynamic and growing team of over 2,100 employees committed to driving innovation and delivering best-in-class software…” Source: company website · checked Sep 2, 2026
12	ARGOPartial evidence	Richardson, TX, United States	201-500	579
	“Founded in 1980, ARGO is a leader in mission-critical and analytical software.” Source: company website · checked Sep 2, 2026
13	Shazam Network - Its, INCIndirect evidence	Johnston, IA, United States	501-1,000	518
	“SHAZAM Inc.” Source: company website · checked Sep 2, 2026
14	VeritranIndirect evidence	New York, United States	501-1,000	491
	“We are a global tech company devoted to simplifying banking experiences.” Source: company website · checked Sep 2, 2026
15	IMM Esign NOW KinectiveIndirect evidence	Gilbert, AZ, United States	201-500	480
	“IMM / eSign is now Kinective.” Source: company website · checked Sep 2, 2026
16	SolifiIndirect evidence	United States	501-1,000	460
	“At Solifi, our mission is to reshape finance technology by bringing together proven solutions into a singular powerful technology platform that helps you protect and scale your…” Source: company website · checked Sep 2, 2026
17	DCIPartial evidence	Hutchinson, KS, United States	201-500	384
	“DCI is a leading developer of Fintech, core processing, and digital banking solutions.” Source: company website · checked Sep 2, 2026
18	SubsplashPartial evidence	Dallas, TX, United States	201-500	327
	“Subsplash is an innovation leader in Fintech and mobile SaaS.” Source: company website · checked Sep 2, 2026
19	Vsoft CorporationIndirect evidence	Atlanta, GA, United States	1,001-5,000	319
	“VSoft is a leading provider of banking and payment solutions to financial institutions of all sizes worldwide.” Source: company website · checked Sep 2, 2026
20	VeriniteIndirect evidence	Wilmington, DE, United States	201-500	264
	“Verinite was founded in year 2011 as a specialist technology services and solutions company focused only on cards, payments and lending domain.” Source: company website · checked Sep 2, 2026
21	PaynearmeIndirect evidence	Santa Clara, CA, United States	201-500	261
	“PayNearMe builds technology to transform the payment experience for businesses and their customers.” Source: company website · checked Sep 2, 2026
22	Kunai, Part Of The PWC NetworkIndirect evidence	San Ramon, CA, United States	201-500	260
	“Kunai is now part of the PwC network: - Kunai was born from experience.” Source: company website · checked Sep 2, 2026
23	Access SoftekPartial evidence	Naperville, IL, United States	201-500	258
	“Access Softek’s innovative financial software solutions keep 400+ credit unions and banks ahead of the technological curve.” Source: company website · checked Sep 2, 2026
24	Panamax INCIndirect evidence	Dover, DE, United States	201-500	251
	Source: company website · checked Sep 2, 2026
25	NymbusIndirect evidence	Jacksonville, FL, United States	201-500	250
	“Nymbus is a leader in the financial services industry, offering best-in-class products and services that provide a modern alternative to traditional business models for banks and…” Source: company website · checked Sep 2, 2026

Showing 25 of 743 fintech software development companies based in the United States

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Fintech software development companies based in the United States at a glance

As of Sep 2, 2026

11-50Median size (employees)

New YorkLargest hub · 81 HQs

18,424Contacts with mobile numbers

Sep 2, 2026Data refreshed

Companies by employee count

1-10

271

11-50

275

51-200

123

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among fintech software development companies, so some rows will be adjacent to the category rather than pure plays. The description and evidence rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “fintech software development companies”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among fintech software development companies, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and an evidence rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 18,473 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 2, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Fintech software development companies by metro

Fintech software development companies in New York81
Fintech software development companies in Miami34
Fintech software development companies in San Francisco26

Frequently asked

How many fintech software development companies are there based in the United States?

RevenueBase identified 743 fintech software development companies headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Jack Henry, headquartered in Monett, tops this list with the largest team on record.

Which city has the most fintech software development companies?

New York leads with 81 headquartered companies, followed by Miami (34) and San Francisco (26).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 18,473 verified decision-maker contacts tracked across these 743 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 2, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.